Football Field Dimensions For Different Levels of Play

In North America, football is a game where the male players are wearing helmets and pads and the field has goal posts on opposite ends. The official or regulation dimensions of a football field may vary depending on the levels of play.
Here are the dimensions of football field in different levels:

National Football League (NFL) or Professional

Outside Dimension:
Length - 120 yards or 360'
Width - 53 and 1/3 yards or 160'
End Zone:
End zones are ten yards deep.
End line:
The end line border is 6'and it marks the end zone's back.
Team Benches:
Team benches are set next to the restraining line which is between the 30 yard markers.
Field Numbers:
NFL field numbers are about 6' in length and 4' in width.
Restraining Line:
All NFL fields have a 6' restraining line next to the side lines. These lines mark the closest area non-players can be to the football field.
Hash Marks:
The hash marks of NFL are the thinnest among all of the levels of football game. It measure about 70' and 9" from the side lines and are about 18' and 6" in width.
Goal Posts:
The goal post of NFL is about 10' in length and 18' and 6" in width.
NCAA or College
Outside Dimension:
Length - 120 yards or 360'
Width - 53 and 1/3 yards or 160'
End Zone:
An NCAA end zone is ten yards deep.
End line:
The end line border is 6'.
Team Benches:
Team benches are also set next to the restraining line which is between the 30 yard markers.
Field Numbers:
The field numbers of NCAA are about 6' in length and 4' in width.
Restraining Line:
All college fields have a 6' restraining line next to the side lines.
Hash Marks:
The hash marks of NCAA measure about 60' from the side lines and are about 40' wide. These are wider than the NFL's hash marks.
Goal Posts:
College or NCAA goal post is about 10' in length and 18' and 6" in width which is the same as NFL.
High School
Outside Dimension:
Length - 120 yards or 360'
Width - 53 and 1/3 yards or 160'
End Zone:
End zones are ten yards deep.
End line:
The end line border is 6' and it marks the end zone's back.
Team Benches:
Team benches are set next to the restraining line which is between the 30 yard markers.
Field Numbers:
The side line field numbers are about 6' in length and 4' in width which marks the ten yard line mark.
Restraining Line:
All high school football fields have a 6' restraining line next to the side lines.
Hash Marks:
The hash marks of high school are the widest among all of the levels of football game. It measure about 53' and 4" wide and the distance is the same from the border of the side lines.
Goal Posts:
The goal posts of high school measure about 10' in length and 23' and 4" in width. These are wider compare to the NFL and college level.
Canadian Football League (CFL) Football
Outside Dimension:
Length - 150 yards or 450'
Width - 65 yards or 195'
End Zone:
End zones are 20 yards deep.
Dead Line:
The end zone's back marks the dead line.
Field Numbers:
The field numbers of CFL are about 6' in length and 4' in width.
Hash Marks:
The hash marks of CFL is designated 24 yards from the sidelines of the playing field, thus, its width is 17 yards or 51'.
Goal Posts:
The goal post of CFL is about 10' in length and 18' and 6" in width.
All fields have the same outside dimensions except for CFL. The hash marks are different for all levels. Also, the goal posts for high school are different from the other levels.